Rope loosening monitoring device, elevator equipment and control device

Abstract

The utility model relates to a slack rope monitoring device used for elevator equipment to monitor at least one rope of the elevator equipment, the elevator equipment and a control device, the slack rope monitoring device is arranged to be used for triggering at least one safety measure, especially the safety measure responding to breakage / falling; the slack rope monitoring device is provided for common monitoring by clamping individual or bundled ropes at at least one longitudinal position of the rope with a carriage which is held in a positioned manner and can be moved in an at least approximately horizontal direction in response to a predeterminable rope movement and a rope force exceeding a predeterminable threshold value and measuring a plurality of ropes. In this way, structural integration in a corresponding elevator system can also be advantageously achieved.

Description

Technical Field

[0001] The utility model relates to a loose rope monitoring device for elevator equipment, elevator equipment and a control device. Background Art

[0002] In elevator systems based on rope or traction device drive, the load-bearing ropes and compensating ropes (or lower ropes) assume important safety functions and must be continuously checked or monitored. It must be possible to immediately detect or diagnose the breakage of a single rope and to initiate a system-wide safety response, such as shutting down or braking. Specifically, in elevator systems with multiple cars arranged one above the other in the same hoistway, it is also particularly important to provide very reliable monitoring of traction device-type supporting devices and / or compensating devices, especially in order to protect the second traveling car. In response to the breakage or detachment of at least one traction device, it should be possible to initiate at least one safety measure with the greatest possible reliability, in particular to cause the opening of at least one safety circuit, in particular by triggering a switch or triggering a switching process or a control process.

[0003] According to the prior art, for example, the rope position detection or rope function detection is performed with reference to the fixing points of the ropes (e.g. in the machine room). However, such a reference cannot be advantageously implemented for all elevator arrangements. In particular, there is an interest in integrating the rope monitoring function in an improved manner and form for elevator systems in which the fixing points of the ropes are arranged on the respective elevator car and / or on the respective counterweight, that is, there are no fixed fixing points, but fixing points that are movable in the vertical direction. Based on this prior art, there is a particular need for a slack rope monitoring that is robust and can be integrated in an advantageous manner in terms of construction. In particular, in particular in view of the large number of existing device technology variants, it is also desirable to be able to achieve adaptability that is as easy as possible for different elevator systems. Utility Model Content

[0004] The object of the present application is to provide a slack rope monitoring device and a corresponding monitoring method for an elevator installation, in particular an elevator installation with elevator cars arranged one above the other in the same shaft, by which the safest and most reliable slack rope monitoring with respect to rope breakage / falling off can be provided. The object of the present application is also to design the slack rope monitoring in such a way that, in particular even in elevator installations without fixing points for fixing the position of the ropes, the ropes can be monitored without significant structural changes to the elevator installation.

[0005] The object is achieved by a loose rope monitoring device, which is arranged for an elevator system and for monitoring the set function of at least one rope of the elevator system, and the loose rope monitoring device is arranged to trigger at least one safety measure, wherein the loose rope monitoring device is arranged to monitor a plurality of ropes together at at least one longitudinal position of the rope by means of a slide that clamps individual or bundled ropes, the slide being held in a position and movable in at least an approximately horizontal direction in response to a predeterminable rope movement and a rope force exceeding a predeterminable threshold value. Advantageous improvements of the utility model are described in the dependent claims. The features of the embodiments described below can be combined with each other, as long as this is not explicitly denied.

[0006] A slack rope monitoring device is provided for an elevator installation, in particular for an elevator installation having elevator cars arranged one above the other in the same elevator shaft, the slack rope monitoring device being arranged for monitoring a rope of the elevator installation with respect to a set function of the rope, in particular with respect to a break or a fall-off, and for triggering at least one safety measure, in particular in response to a break / fall-off.

[0007] According to the utility model, the slack rope monitoring device is arranged to monitor a plurality of ropes together by clamping individual or bundled ropes at at least one longitudinal position of the rope by means of a slide which is held in a position and can move in at least a nearly horizontal direction in response to a predetermined rope movement and a rope force (especially horizontally oriented) exceeding a predetermined threshold value. This provides a secure and efficient monitoring mode and form, which is particularly advantageous when structurally integrated into an elevator installation. In particular, the slide component can also achieve a particularly space-saving installation.

[0008] In this case, the rope is in particular a traction means of the elevator installation which performs a supporting or compensating function.

[0009] According to the present disclosure, if a device for slack rope monitoring is involved, this is firstly understood to be such a structural way and form of realizing monitoring, in particular a way and form comprising clamping a plurality of ropes. The slack rope monitoring device can optionally also include a control device or at least one control / regulatory unit or device, or optionally be connected to said unit or device, for example to an anti-collision device.

[0010] Expressions relating to persons apply to all genders within the scope of the present disclosure, unless a gender-neutral expression is used.

[0011] In other words, the invention can be described as follows: the slack rope monitoring according to the disclosure preferably comprises a slide fixed and guided in the region of the respective upper beam of the respective elevator car (or in other words, the respective structural support component according to the meaning), for example, a slide fixed and guided below the respective upper beam for the lower elevator car, in particular in so-called 1:1 suspensions (the fixing points for the ropes are advantageously on the elevator car and the counterweight; in contrast, for example, in 2:1 suspensions, the fixing points are advantageously arranged in the region of the machine room), for example, comprising a slide fixed and guided below the respective upper beam for the lower elevator car, in which case the slide encompasses a plurality of ropes. By means of a driver fixed to the respective upright rope, the slide can be moved due to the rope movement in the event of a tear, for example, during start-up / travel, which leads to rope movement, whereby, for example, at least one switch can be actuated according to a direction. In other words: the slide can be moved relative to at least one switch component by means of at least one rope, and the at least one switch component is advantageously arranged fixed at least with respect to a horizontal spatial direction (for example, fixed to the upper beam). Here, two horizontal directions or opposite horizontal directions can also be monitored by, for example, providing two switches (one switch for each direction) or by providing two switches at corresponding (longitudinal) positions. The switches are advantageously fixed to angle pieces or similar fixings, between which the slide is guided. In order to ensure a certain resistance to the movement and relative movement of the rope, the slide can be kept in the desired position, for example, by a positioning angle piece made of a thin plate. If the rope is torn, the slide is pulled together by the corresponding driver, that is, in the above-described arrangement, the positioning angle piece is bent open in the form of a predetermined bending / breaking position, and a mechanical switch (for example, a roller switch) arranged at a predetermined longitudinal distance can be triggered, for example, by a screw or pin protruding upward or downward on the slide. The driver, for example, designed as a hose clamp, is advantageously fixed to each rope at a certain (longitudinal) distance from the slide, in particular to allow a certain relative movement. In order to ensure that the broken rope triggers the at least one switch component in two (longitudinal) directions, the corresponding driver can be selectively fixed to the corresponding rope in the section surrounded by the slide or on both sides outside the slide. In this way, a rope break on a supporting rope of the elevator system can be detected, in particular in combination with triggering of at least one safety measure by actuating a switch operated by the carriage.

[0012] The design of the slack rope monitoring according to the invention also has the advantage that it is scalable with respect to the number of ropes without requiring significant structural adaptations. In this respect, it is also possible to prestress the ropes in the horizontal direction, for example by prestressing the ropes via spring-prestressed rollers, so that the loss of prestress can be detected, for example by the rollers acting on switches via flaps / switching plates, but in this case each individual rope needs to be monitored.

[0013] It is understandable that the design of the slack rope monitoring according to the present invention is not necessarily limited to a certain type of traction device, but other forms of traction devices compared to the present disclosure but at least substantially the same function may also be applied by those skilled in the art.

[0014] According to one embodiment, the slack rope monitoring device is arranged to trigger at least one safety measure, in particular a safety measure in response to a breakage / falling off, by means of a control device of the elevator installation or by means of an anti-collision device of the elevator installation or by means of a corresponding signal transmitted by at least one switch component. In other words: the slack rope monitoring device provides a trigger for triggering a safety measure, whereby the implementation / introduction of the corresponding safety measure can also be achieved by means of other devices of the elevator installation, which are connected to the slack rope monitoring device. Here, the corresponding switch component can be fixed, for example, on the upper beam, in particular fixed so that the relative movement of the slide relative to the upper beam in the horizontal direction enables the operation of the corresponding switch component.

[0015] According to one embodiment, the slack rope monitoring device is arranged to trigger at least one safety measure when a rope force threshold value is exceeded in an at least approximately horizontal direction by combining a (longitudinal) position of the carriage with an actuation of at least one switching element, in particular in the region of the respective (longitudinal) position of the carriage being maintained. This facilitates monitoring based on a predeterminable rope force threshold value, in particular in the horizontal direction, wherein predeterminable values ​​of the rope movement, in particular a predeterminable distance of the driver relative to the carriage frame, can also be taken into account.

[0016] According to one embodiment, the carriage has a connecting plate or a frame, which in the region of at least one longitudinal position (reference position) of the carriage to be monitored and maintained, respectively, clamps at least two ropes in the circumferential direction, preferably by means of single rope embeddings arranged at least two locations of the connecting plate or the frame in the longitudinal direction of the ropes. The clamping here can also be a clamping without significant adhesion / friction. This also makes it possible to implement the safety device without significant influence on the normal operation of the elevator installation or without significant effect on any relative movement of the ropes within the permissible tolerance range.

[0017] According to one embodiment, the carriage is composed of two web halves or frame halves, which each embrace the ropes at least approximately over a circumferential angle in the range of 180°, in particular from above and below, for example at least at two locations in the longitudinal direction of the rope at a distance in the range of 15-30 cm, for example. This is particularly advantageous for achieving a structural integration of the safety device or monitoring device described here, in particular in the region of a structural support component of the corresponding elevator car.

[0018] According to one embodiment, the clamping of the rope is designed in such a way that a relative movement of the respective rope relative to the slide is permitted within a predeterminable permissible tolerance range. In other words: the rope forces are advantageously not transmitted directly between the rope and the clamping on the slide, but indirectly via a driver, which abuts against the slide after the respective expected relative movement. With respect to the predetermined longitudinal tolerances or relative movement tolerances, this also enables reliable monitoring taking into account different relative movements of the individual ropes, for example due to different rope lengths.

[0019] According to one embodiment, the clamping of the rope is achieved without significant static friction or is predetermined to be at least below a lower static friction threshold. This also facilitates (certain) relative movements of the individual ropes within a set permissible tolerance range without applying significant forces to the carriage. For example, the passage formed by the clamping portion for the respective rope is at least larger than the diameter of the rope.

[0020] According to one embodiment, at least one axially fixed driver is provided on each rope at a predetermined distance from the connecting plate or frame (section) of the carriage, wherein the driver has a larger radial extension than the clamping portion formed around the rope by the connecting plate or frame, and the respective driver is axially fixedly connected to the rope, so that when the rope force threshold is exceeded, the axial force is transmitted through the driver / drivers to the predetermined breaking point (or predetermined bending point) between the carriage and the holding position, and the predetermined breaking point is disconnected, the carriage is moved and at least one switching element is actuated, specifically on both sides in opposite horizontal directions, in particular when a tolerance threshold of the rope position change in the longitudinal direction (in the form of sliding) defined by the relative position of the respective driver relative to the frame or connecting plate is exceeded. This is also particularly conducive to achieving a favorable compromise between the freely adjustable length compensation tolerance and the effective action time of the trigger for triggering the safety measure. The respective driver can, for example, be placed or mounted radially at the respective expected longitudinal position of the respective rope and fixed axially.

[0021] For example, it is advantageous if the width of the slide (or the longitudinal dimension in the longitudinal direction of the rope) is at least approximately equal to twice the tolerance longitudinal distance of the axial position of the driver on the rope relative to the slide or to the expected stop position. In this configuration, the corresponding driver can be selectively arranged outside the slide or inside the slide (in particular between two connecting plates). This is also particularly advantageous for achieving a common clamping of a larger number of ropes without the risk of the individual drivers causing obstructions. In other words: for adjacent ropes, the arrangement of the drivers can advantageously be alternating, that is, the drivers are arranged alternately outside the slide or inside the slide.

[0022] According to one embodiment, the carriage is held / can be held in a holding position on the upper beam of the respective elevator car or in a set longitudinal position in the region of the upper beam of the respective elevator car by means of holding elements acting in the manner of a predetermined breaking point, in particular angled pieces and / or pressure pieces and / or spring elements, in particular in combination with holding rods. This facilitates, on the one hand, the realization of an advantageously adaptable device in terms of construction and, on the other hand, the realization of an expandable desired breaking point in a simple manner.

[0023] The "upper beam" here refers to a structurally important support element that is specific to the car, through which ropes (in particular supporting ropes) can be guided, for example, five or six ropes can be guided in bundles. It is understood that the holding on the upper beam described here can alternatively also be achieved by holding on other types of supports when the corresponding ropes to be monitored are longitudinally guided on other supports. Based on the present disclosure, a person skilled in the art can also realize the holding support of the slide at other alternative positions or relative positions.

[0024] According to one embodiment, the retaining element is formed by an angled piece with a predetermined material thickness and deformation resistance. As a result, the desired breaking threshold for the rope force acting at least approximately horizontally (in the longitudinal direction) on the carriage can also be predetermined in a relatively simple manner and form; this also enables, for example, the possibility of relatively simple adaptation of the triggering threshold to different rope lengths or shaft heights.

[0025] According to one embodiment, a threshold value for triggering the rope force can be predetermined by the slack rope monitoring device, in particular, the holding element can be realized by a predetermined breaking point that is predetermined as a function of the rope force. For example, it can be provided that the predetermined breaking force should exceed the rope force that can be applied within the range of the set permissible length variation by a factor of 5 or 10, in particular because significantly greater forces act when the rope breaks. A person skilled in the art can also determine the factor, for example, as a function of the shaft height or the height to be overcome by the corresponding elevator car. Here, the predetermined breaking point can also be referred to as a predetermined (non-) bending point, in particular when the holding element is designed as a curved plate part.

[0026] According to one embodiment, the slide is arranged to be mounted in an at least approximately horizontal orientation in the longitudinal direction of the rope and flatly mounted below a structural support component such as an upper beam of the corresponding elevator car or below a height range of, for example, 5 cm to 20 cm. According to the purpose of the utility model, this is particularly advantageous for structural integration with the corresponding elevator system, especially even when multiple cars are arranged one above the other in the same hoistway, without much intrusive operation inside the hoistway, but rather cleverly integrating the monitoring function in a better protected area of ​​the approximately horizontally oriented structural support component.

[0027] According to one embodiment, the carriage has a width in the transverse direction adapted to the thickness of the rope, so that the carriage can clamp an expandable number of ropes in the range of at least two to six, for example five ropes adjacent to each other that are clamped in at least approximately a horizontal plane. This also simplifies the implementation of the joint monitoring of a larger number of ropes, without significantly increasing the expenditure on equipment and without the risk of jamming or blocking due to the number of ropes (for example a large number of rollers or deflectors).

[0028] According to one embodiment, the slack rope monitoring device comprises at least one switch component, which is preferably a mechanical switch component, which is connected to the slide or its desired longitudinal position via at least one switch element (e.g. a pin, a screw), in particular via two switch elements arranged on both sides of the switch component in the longitudinal direction of the rope. This also allows a strong and reliable implementation, even for a bidirectional operating mode. The mechanical design of the switch component also provides a high level of safety here.

[0029] The aforementioned object is also achieved by an elevator installation, which has at least one slack rope monitoring device according to the disclosure, the slide of which is fixed to the corresponding elevator car by a fixing part (especially an angled part), preferably to the upper beam of the corresponding elevator car of the elevator installation or in the region of the upper beam. This results in the aforementioned advantages, especially with respect to a lower expenditure in terms of equipment technology and a higher safety level, which can be realized as a modification, for example.

[0030] According to one embodiment, the slack rope monitoring device is implemented for the lower elevator car of the elevator installation, in particular for the lower elevator car arranged below the upper beam. This structural integration also achieves a high level of safety, in particular since the slide itself is also arranged in a protected environment between the upper beam and the car top and can be subjected essentially only to horizontally acting forces in the event of damage, which allows a more precise adjustment.

[0031] According to one embodiment, the slack rope monitoring device is implemented for the upper elevator car of the elevator installation, in particular for the upper elevator car arranged above the upper beam. It is understood that the two arrangements described here (arranged above and below the structural support component) can be combined with each other in one elevator installation.

[0032] According to one embodiment, the respective ropes of the elevator installation are fastened to the respective elevator car and / or to the respective counterweight at a fastening point that is movable in the vertical direction. In other words: no fixed-position fastening point is used for fastening the ropes. This type of rope fastening has proven to be suitable, in particular also in combination with a 1:1 suspension. According to one embodiment, the ropes are guided in this case in the manner of a 1:1 suspension, in particular for elevator installations with elevator cars arranged one above the other in the same elevator shaft.

[0033] The aforementioned objects are also achieved by a method for monitoring a loose rope, that is to say by a method for monitoring a loose rope in an elevator installation, in particular an elevator installation with elevator cars arranged one above the other in the same elevator shaft, wherein at least one rope of the elevator installation is monitored with respect to a set function of the rope, in particular with respect to a break or a fall-off, wherein in particular in response to a break / fall-off at least one safety measure is triggered, wherein a plurality of ropes are monitored together by a carriage enclosing individual or bundled ropes at at least one longitudinal position of the ropes, the carriage being held in a position and being movable in an at least approximately horizontal direction in response to a predeterminable rope movement and a rope force (in particular horizontally oriented) exceeding a predetermined threshold value, wherein the carriage triggers the at least one safety measure when the rope force threshold value is exceeded in the at least approximately horizontal direction, in particular on the basis of an actuation coupling of the (longitudinal) position of the carriage to the at least one switching element. This results in the aforementioned advantages, in particular with respect to a very strong and reliable trigger for initiating the safety measure.

[0034] According to one embodiment, at least one driver connected axially fixedly to the respective rope transmits an axial force to a predetermined breaking point (or predetermined bending point) between the slide and the holding position when a rope force threshold is exceeded, breaks the predetermined breaking point and moves the slide, wherein the actuation of the at least one switching element is realized by the slide, in particular when a change in the rope position in the longitudinal direction exceeds a permissible threshold value defined by the relative movement of the respective driver relative to the slide. This functional mode in the form of an axial stop preventing the rope from sliding through by the slide can be realized relatively elegantly, essentially independently of the number of ropes to be monitored, while achieving a high level of safety.

[0035] According to one embodiment, at least one switch component is mechanically operated by the slide in that at least one switch element (e.g. a pin, a screw) is coupled to the slide or the desired longitudinal position of the slide, in particular by two switch elements arranged on both sides of the switch component (e.g. designed as a roller switch) in the longitudinal direction of the rope. For example, a roller switch is provided, which is wired to at least one other control technology device / regulatory technology device of the elevator system, for example, to a control device and / or an anti-collision device. On the one hand, the mechanical actuation and triggering and on the other hand, the wired connection provide a high degree of robustness and can have a favorable effect on achieving the highest possible reliability. Alternatively, wireless signal transmission can also be achieved, in particular by arranging a communication module for wireless transmission on each elevator car.

[0036] According to one embodiment, in response to the movement of the carriage by the rope force, a signal for triggering at least one safety measure, in particular a signal for triggering the safety measure by the control device, is generated by actuating at least one switch element. The slack rope monitoring detects the cause and provides a trigger, which can be further processed in control / regulation technology for the specific device in order to implement a certain safety measure.

[0037] The aforementioned objects are also achieved by a control device for an elevator installation, the elevator installation having at least one slack rope monitoring device according to the disclosure, wherein the control device is arranged to trigger at least one type of safety measure based on a signal of the corresponding switch component in response to the actuation of at least one switch component by the movement of the slide of the slack rope monitoring device driven by the rope force, in particular to open at least one safety circuit (preferably the safety circuits of all relevant cars), wherein the steps according to the method for slack rope monitoring are advantageously connected to the control device in that a plurality of switch components that can be actuated in a specific direction are connected. The aforementioned advantages can thereby be achieved, in particular with regard to the advantage that the trigger provided by the monitoring device is advantageously integrated into the operation of the entire elevator installation in terms of control technology / regulation technology.

[0038] It is understandable that at least one safety measure can also be selectively pre-set by the anti-collision device; in this regard, it can be understood by referring to the above control device as an example; those skilled in the art can pre-set which settings are to be made by the control device of the elevator equipment or by the anti-collision device according to the design scheme of the corresponding elevator system; in this regard, the present invention is particularly based on the following concept, namely, generating a trigger or signal model for triggering the corresponding safety measure.

[0039] The aforementioned objects are also achieved by using at least one slide for clamping a rope connected to an elevator car for providing the function of loose rope monitoring, the slide being held in a predetermined position relative to the elevator car of the elevator system in at least one direction by a retaining element serving as a predetermined breaking point, the loose rope monitoring being arranged for triggering at least one safety measure, in particular a safety measure in response to a rope breaking / falling off, wherein the rope is clamped by the slide, wherein the slide is held on the respective elevator car, wherein at least one driver is fixed axially to each rope, the driver being designed such that a sliding movement of the respective rope in the axial direction causes the retaining element to break and the slide to move, and causes at least one switching element to switch, thereby triggering the at least one safety measure, in particular in the case of a loose rope detection device according to the disclosure. The aforementioned advantages can thereby be achieved, in particular also with regard to the improvement for existing, already installed elevator systems. Advantageously, the clamping of the rope is achieved by two frame halves or connecting plate halves of the slide; in other words: it is not necessary to guide the ropes through the clamping portion with their free ends.

[0040] Summary: In elevator equipment, the correct functioning of traction devices must be monitored. The utility model relates to a loose rope monitoring device for an elevator equipment, which is used to monitor at least one rope of the elevator equipment, and the loose rope monitoring device is configured to trigger at least one safety measure, in particular a safety measure in response to a breakage / falling off; and the loose rope monitoring device is configured to monitor a plurality of ropes together by clamping individual or bundled ropes at at least one longitudinal position of the rope using a slide, the slide is positioned and is movable in response to a predeterminable rope movement and a rope force exceeding a predeterminable threshold value in at least an approximately horizontal direction. This can also advantageously achieve structural integration into the corresponding elevator equipment. In addition, the utility model mainly also relates to a corresponding method, in which the clamped rope is monitored at at least one longitudinal position by a slide held in a position, and the slide triggers at least one safety measure when the rope force threshold is exceeded in at least an approximately horizontal direction. This also provides a high level of firmness and safety in particular. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention is described in more detail in the following drawings. For reference numerals not explicitly recorded in the corresponding drawings, reference is made to other drawings. In the drawings:

[0042] Figure 1 shows a perspective view of a slack rope monitoring device according to an embodiment;

[0043] Figure 2A , Figure 2B , Figure 2CTwo side views and a top view of a slack rope monitoring device according to an embodiment are shown;

[0044] Figure 3A , Figure 3B A side view and a detailed (partial) side view showing an exemplary integration of a slack rope monitoring device in an elevator installation according to an embodiment;

[0045] Figure 4 A perspective view showing an exemplary integration of a slack rope monitoring device in an elevator installation according to another embodiment;

[0046] Figure 5 A perspective view showing a retaining element used as a predetermined bending / breaking location of a slack rope monitoring device according to an embodiment;

[0047] Figure 6 A side view showing an example of an elevator installation to which a slack rope monitoring device according to an embodiment may be provided; and

[0048] Figure 7 A schematic diagram showing steps of a method for slack rope monitoring according to an embodiment is shown. DETAILED DESCRIPTION

[0049] First, refer to all reference numerals and Figure 1 The utility model is generally described. Special features or individual aspects of the utility model or aspects that can be well seen / illustrated in the corresponding drawings are described separately in conjunction with the corresponding drawings.

[0050] The elevator installation 1 has at least one elevator car 3 coupled to at least one rope 7, wherein the forces exerted by the elevator car 3 can be at least partially compensated by at least one counterweight 9. The elevator car 3 is guided on at least one rope 7 (at least approximately stationary relative to the horizontal) by at least one structural support part 5 of the elevator car, in particular the structural support part 5 above the upper beam, for example suspended on deflection rollers. A slack rope monitoring device 10 is arranged on the structural support part 5 or at least in the region of the structural support part 5, for example by means of a fixing 18 (for example a sheet metal angle piece designed to be screwed by means of a fixing screw 18.1) and is held in a positioned manner relative to the support part 5, in particular a slide 11 (or a trigger slide, a switch slide) of the slack rope monitoring device 10 is held in a positioned manner relative to the support part 5. Typically, the car 3 is coupled to a plurality of ropes 7. The slide 11 enables a single rope insertion 17 to be realized for each rope individually. At least one switch element 21 is arranged on the carriage, in particular as a component of at least one switch device 20, for example at least one mechanical switch, in particular a roller switch, and the switch element 21 can be fixed on the carriage in a positional arrangement, for example by means of a profile fixing 23. Here, the fixing 23 can also assume a holding function for the carriage 11, in particular by means of a holding edge or a bent edge to hold the carriage against gravity. The carriage 11 advantageously has a frame 16, which can include one or more slats 16.1. The frame or slat is advantageously formed by two frame halves or slat halves 16.3, by which a semi-cylindrical inner surface portion 17.1 is advantageously defined for accommodating or individually clamping the corresponding rope. Here, the carriage 11 can be arranged in a predeterminable monitoring longitudinal position (reference position) x10 relative to the structural support part 5, for example approximately centrally relative to the overall extension of the structural support part 5 at least in the longitudinal direction. The individual spatial directions are designated here as follows: longitudinal direction (x) or the direction of longitudinal extension of the cables along the structural support element 5 , transverse direction (y), height direction (z) (in particular vertical in the direction of gravity).

[0051] The elevator system 1 optionally comprises a control device 19 and / or a collision protection device, which is schematically indicated here with the same reference numerals.

[0052] The working principle of the slack rope monitoring device 10 is explained in detail below: A rope force Fs exceeding a predeterminable threshold value (applied at least approximately in the horizontal direction, in particular in the longitudinal direction x) causes the corresponding rope to slide through the rope-specific clamping portion 17 on the carriage 11 until the driver 13 (e.g. a hose clamp) abuts against the frame 16 of the carriage 11 or the corresponding strip 16.1; from this moment on, an axial force is transmitted from the corresponding rope to the frame of the carriage, which has been held in a predetermined position so far, and this force is transmitted to the retaining element 12 (in particular a positioning angle piece) which holds the frame of the carriage in the longitudinal position. The retaining element 12 serves as a predetermined bending / breaking point, i.e. it can be bent or broken starting from a determined rope force threshold. Only when the predetermined bending / breaking point 12 breaks, the slide 11 actually moves in the horizontal rope force direction, and when moving in this way, the switch element 15 or the trigger element (for example, an upwardly protruding screw) fixed in a position and orientation on the frame of the slide interacts with the corresponding roller switch 21a, 21b, in particular, by the roller 21.1 of the corresponding roller switch 21a, 21b being deflected (mechanical switch). In this connection, at least one safety measure can be triggered, for example by first generating a signal and transmitting the signal to the control device 19. For example, by Figure 1 It can be seen that the roller 21 . 1 of the respective roller switch 21 a , 21 b can be pivoted outwardly in both directions of longitudinal movement of the carriage, so that a direction-specific signal can be generated.

[0053] Thus, a method for slack rope monitoring in an elevator installation, in particular in an elevator installation with elevator cars arranged one above the other in the same elevator shaft, can advantageously comprise the following steps:

[0054] Step S1, keeping the slide capable of horizontal movement in position;

[0055] Step S2, transmitting axial force between the rope and the slide seat through the driving member;

[0056] Step S3, at least one predetermined breaking position is broken;

[0057] Step S4, operating at least one switch component through the slide;

[0058] Step S5, generating a signal for triggering a safety measure;

[0059] Step S6: trigger at least one security measure.

[0060] The particularities of the present invention are described below with reference to the accompanying drawings or embodiments.

[0061] Figure 1The slack rope monitoring device 10 is shown, which clamps four ropes. Two roller switches 21a, 21b are arranged on both sides of the clamped ropes, and the rollers 21.1 of the roller switches 21a, 21b are arranged between switch elements 15 oriented perpendicularly to the set movement direction of the carriage 11.

[0062] exist Figure 2A , Figure 2B , Figure 2C The slack rope monitoring device 10 is shown in three different views. Figure 2A A relatively flat structure can be seen in FIG, which facilitates integration in the region of the corresponding structural support components of the respective elevator car. Figure 2B As can be seen in the figure, the drive element 13 can be selectively arranged outside the slide or between the connecting plates of the frame of the slide. In this regard, the frame of the slide provides both an external stop surface and an internal stop surface. Figure 2C In the figure, two frame halves 16.3 can be seen, which provide a clamping portion (inner surface portion 17.1) of at least approximately a semi-cylindrical shape for each rope; the frame halves can also be arranged around the already installed ropes in an improved solution.

[0063] It is understandable that in Figure 1 as well as Figure 2A , Figure 2B and Figure 2C The form and manner of clamping the ropes shown in the figure are advantageous, in particular in view of the design of the drivers described here, in order to enable monitoring of specific ropes. For example, sensor surfaces or the like can also be provided in the region of the respective stop end faces of the corresponding connecting plates of the carriage or the frame, by means of which it can be monitored which rope or which driver hits the frame. A person skilled in the art can still use this as a starting point to achieve the clamping of a plurality of ropes in a bundle, for example, by holding the ropes together, but guiding the ropes individually through the constriction and, for example, transmitting the force to the frame via a local thickening.

[0064] exist Figure 3A , Figure 3B In each case, a structural support component 5 is shown in a side view, and a slack rope monitoring device 10 is integrated elongatedly below the structural support component 5. Figure 3A It can be seen in FIG that the slack rope monitoring device 10 is in a straight line with the rope path between the deflection rollers guiding the rope on the support part 5. The carriage can therefore adopt the relative position of the ropes specified by the deflection rollers, in particular the lateral distance of the ropes relative to each other (the clamping part is geometrically designed accordingly). Figure 3B, the manner and form of fastening of the slack rope monitoring device 10 is shown by way of example, in particular by means of a sheet metal angle piece and screws to the underside of the support part 5 , so that the slide is fixed, for example, by means of a bent edge, to prevent it from falling.

[0065] exist Figure 4 , the structural support part 5 is shown in a perspective view from above. The rope 7 is guided slightly offset in the diagonal direction relative to the width extension direction of the car, so that the longitudinal direction of the rope described here does not exactly correspond to the width extension direction of the car. The degree of deviation of the longitudinal direction of the rope from the diagonal direction is device-specific and is therefore variable within the scope of the invention. The manner and form of structural integration of the slack rope monitoring device 10 or the slide 11 is not particularly affected by this.

[0066] exist Figures 1 to 4 In the embodiment shown in , the fixing part of the switch component and the positioning retaining part of the slide are realized by two kinds of sheet metal angled part sections 18, 23, which are screwed to each other and can be oriented relative to each other, for example, by long holes, for example, the sheet metal angled part sections 18, 23 are respectively provided as bent stamping parts (in the form of mounting plates with a special profile for the connection part on the support component). On the one hand, this design scheme is conducive to structural integration in the area of ​​the support component 5, and on the other hand, multiple functions can be realized by fewer and less costly parts (such as, for example, a firm and precisely positioned switch fixing structure can also be advantageously realized). Based on this structure, those skilled in the art can also conceive alternative design schemes for fixing parts and retaining parts.

[0067] exist Figure 5 , an exemplary design of a retaining element 12 is shown here as a positioning angle element for providing a predetermined bending position. The retaining element is mounted on a retaining angle or a fixing plate of the slack rope monitoring device 10 in the region with the hole, and the bent section without the hole bears against the end side of the carriage and holds the carriage in a longitudinal position until a rope force threshold value predetermined by the required bending force and the number of retaining elements 12 (e.g. two retaining elements 12 on each side of the carriage) is exceeded. At this point, the bent section bends open, the carriage moves and at least one switching element is actuated or a signal for triggering a safety measure is generated.

[0068] Figure 6 1 shows a roughly schematic diagram of an elevator system 1 with the rope guide structure being indicated. The integration of the slack rope monitoring device 10 on the car 3 shown here by way of example can also be realized on other cars.

[0069] exist Figure 7A method for slack rope monitoring in an elevator installation is briefly shown in the figure, wherein at least one rope of the elevator installation is monitored with respect to a set function, wherein at least one safety measure, in particular a safety measure in response to a breakage / falling off, is triggered; wherein a plurality of ropes are monitored together by clamping them at at least one longitudinal position of the ropes with a carriage, which is held in a position and is movable from a predetermined rope movement and rope force, wherein the carriage triggers at least one safety measure when a predetermined rope movement and a predetermined rope force threshold value are exceeded in at least approximately horizontal direction, in particular the safety measure is triggered based on the (longitudinal) position of the carriage in combination with the actuation of at least one switching element. This method advantageously has the following steps:

[0070] Step S1, keeping the slide capable of horizontal movement in position;

[0071] Step S2, transmitting axial force between the rope and the slide seat through the driving member;

[0072] Step S3, at least one predetermined breaking position is broken;

[0073] Step S4, operating (especially mechanically operating) the switch component through the slide;

[0074] Step S5, generating a signal for triggering at least one safety measure;

[0075] Step S6, triggering at least one safety measure, for example in response to the rope breaking / falling off.

[0076] It is understood that the relative positions of the various components shown in the figures can be individually adjusted adaptively. For example, the switch components can be arranged in other ways, and for example, the switch components can also be combined with the predetermined breaking position elements. In this regard, the embodiments shown here should be understood as exemplary embodiments, especially exemplary embodiments optimized in terms of firmness and safety. Based on this, those skilled in the art can make modifications to specific requirements according to specific application situations.

[0077] Reference numerals list

[0078] 1 Elevator equipment 3 Elevator Car 5 Structural support components, such as the upper beam of an elevator car 7 rope 9 Counterweight 10 Slack Rope Monitoring Device 11 Slide (trigger slide, switch slide) 12 Retaining elements, in particular positioning angle pieces (predetermined bending point / breaking point) 13 Driving parts, especially hose clamps 15 Switching elements, triggering elements, e.g. upward-protruding screws 16 frame 16.1 Connecting plate 16.3 Connecting plate halves or frame halves 17 Single rope embedded or clamped 17.1 An inner surface portion for receiving a corresponding rope 18 Fasteners, especially sheet metal angle fittings 18.1 Fixing screw 19 Controls 20 Switchgear 21 Switch components, such as mechanical switches, especially roller switches 21a, 21b First roller switch and second roller switch 21.1 Scroll Wheel 23 Switch component fixing part F Rope force S1 Step S1, keep the horizontally movable slide in position S2 Step S2: transmitting axial force between the rope and the slide seat through the driving member S3 Step S3: at least one predetermined breaking point is disconnected S4 Step S4, operating at least one switch component via a slide S5 Step S5, generating a signal for triggering at least one safety measure S6 Step S6: trigger at least one safety measure x10 Monitoring longitudinal position (reference position) x, y, z Longitudinal direction, lateral direction, height direction (especially vertical direction).

Claims

1. A loose rope monitoring device, the loose rope monitoring device (10) being arranged for use in an elevator installation (1) and for monitoring a set function of at least one rope (7) of the elevator installation (1), and the loose rope monitoring device (10) being arranged for triggering at least one safety measure, It is characterized in that The slack rope monitoring device (10) is arranged to monitor a plurality of ropes (7) together at at least one longitudinal position of the ropes (7) by means of a slide (11) enclosing the ropes (7) individually or in bundles, the slide (11) being held in position and movable in an at least approximately horizontal direction (x) in response to a predeterminable rope movement and a rope force (Fs) exceeding a predeterminable threshold value.

2. The slack rope monitoring device according to claim 1, characterized in that: The slack rope monitoring device is provided for triggering the at least one safety measure by means of a control device or a collision protection device or by means of a corresponding signal transmitted by at least one switching element.

3. The slack rope monitoring device according to claim 1, characterized in that: The slack rope monitoring device is arranged for triggering the at least one safety measure by combining a longitudinal position of the carriage with an actuation of at least one switch member when a rope force threshold is exceeded in an at least approximately horizontal direction.

4. The slack rope monitoring device according to claim 1, characterized in that: The carriage has a connecting plate or a frame which respectively encloses at least two cables in the circumferential direction in the region of at least one longitudinal position of the carriage which is to be monitored and maintained.

5. The slack rope monitoring device according to claim 1, characterized in that: The slide is formed by two connecting plate halves or frame halves, which respectively enclose the ropes at least over a circumferential angle in the range of approximately 180°.

6. The slack rope monitoring device according to claim 1, characterized in that: The clamping of the ropes is designed to allow relative movement of the ropes relative to the slide within a predeterminable tolerance range; and / or the clamping of the ropes is carried out without significant static friction or the clamping of the ropes is predetermined to be at least below a lower static friction threshold.

7. The slack rope monitoring device according to claim 1, characterized in that: At least one axially fixed driving member is provided on each rope at a predetermined distance from a connecting plate or a frame of a slide, wherein the driving member has a radial extension dimension larger than a clamping portion formed around each rope by the connecting plate or the frame, wherein the corresponding driving member is axially fixedly connected to each rope, so that when a rope force threshold is exceeded, the axial force is transmitted through the driving member to a predetermined breaking position between the slide and the holding position, causing the predetermined breaking position to be disconnected, the slide to move, and at least one switch component to be actuated.

8. The slack rope monitoring device according to claim 1, characterized in that: The slide is held in a holding position on the upper beam of the respective elevator car or in a set longitudinal position in the region of the upper beam of the respective elevator car by means of holding elements acting in the manner of predetermined breaking points.

9. The slack rope monitoring device according to claim 8, characterized in that: The retaining element is formed by an angled piece having a predetermined material thickness and deformation resistance; and / or wherein, The rope force threshold value for triggering the slack rope monitoring device can be predetermined.

10. The slack rope monitoring device according to claim 1, characterized in that: The carriage is provided for mounting in an at least approximately horizontal orientation in the longitudinal direction of the ropes and mounted flat below the structural support part of the respective elevator car or below at a height in the range of 5 cm - 20 cm.

11. The slack rope monitoring device according to claim 1, characterized in that: The slide has a width along the transverse direction that is adapted to the thickness of the rope, so that the slide can clamp an expandable number of ropes in a range of at least two to six.

12. The slack rope monitoring device according to claim 1, characterized in that: The slack rope monitoring device comprises at least one switch component, wherein the at least one switch component is coupled to the carriage or its desired longitudinal position via at least one switch element.

13. An elevator device, characterized in that: The elevator installation (1) has at least one loose rope monitoring device (10) according to any one of claims 1 to 12, wherein a slide (11) of the loose rope monitoring device (10) is fastened to a corresponding elevator car (3) of the elevator installation (1) via a fastening element (18).

14. The elevator device according to claim 13, characterized in that The loose rope monitoring device is implemented for the lower elevator car of the elevator installation; and / or wherein the loose rope monitoring device is implemented for the upper elevator car of the elevator installation; and / or wherein the corresponding rope of the elevator installation is fixed to the corresponding elevator car and / or to the corresponding counterweight at a fixing point that moves in the vertical direction.

15. A control device (19) for an elevator installation (1) having at least one slack rope monitoring device (10) according to any one of claims 1 to 12, characterized in that The control device (19) is configured to trigger at least one safety measure based on a signal of the corresponding switch component (21) in response to the actuation of at least one switch component (21) by movement of the slide (11) of the slack rope monitoring device (10) driven by the rope force.

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